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Our take on the MartinLogan Dynamo™ 1500X
by Crutchfield's James Ralston

Whether you're playing two-channel music or firing up the latest Hollywood action blockbuster in surround sound, MartinLogan's Dynamo 1500X is sure to move you — maybe even literally. With its high-excursion 15" woofer and beefy 650-watt amplifier, this potent subwoofer can fill your room with accurate, musical, low-distortion bass all the way down to 20 Hz. You'll hear, and more importantly, feel the "thwack" of a well-recorded kick drum or the impact of movie soundtrack explosions.

Soul-stirring bass

Shown in High-gloss Piano Black

Whether you're playing two-channel music or firing up the latest Hollywood action blockbuster in surround sound, MartinLogan's Dynamo 1500X is sure to move you — maybe even literally. With its high-excursion 15" woofer and beefy 650-watt amplifier, this potent subwoofer can fill your room with accurate, musical, low-distortion bass all the way down to 20 Hz. You'll hear, and more importantly, feel the "thwack" of a well-recorded kick drum or the impact of movie soundtrack explosions.

Tailor the bass precisely to your room

Every room has unique acoustic characteristics, so placing a subwoofer and dialing it in can sometimes be tricky. That's why MartinLogan offers their Perfect Bass Kit(sold separately; requires computer running Windows&reg; XP, Vista, or Windows 7), so you can ensure that the Dynamo 1500X subwoofer sounds just right in your specific listening room. You connect the subwoofer to your Windows® PC, along with a microphone provided in the kit. The included software takes sound measurements in your listening positions and adjusts your subwoofer automatically, giving you perfect bass for your space, saving you a lot of time and guesswork.

Front-firing? Down-firing? You decide.

The Dynamo 1500X comes configured with the woofer facing downward, which makes sense for most folks who'll want to position it as a free-standing subwoofer in their listening rooms. But if you prefer to tuck this subwoofer into a hidden alcove or a cabinet, you can easily remove the feet and reattach them to orient the woofer so it fires forward into your room. For front-firing configurations, MartinLogan provides a grille to cover the woofer, plus 90-degree RCA adapters for making input signal connections.

Speaking of connections, this subwoofer's balanced XLR input is a nice touch. It lets you make a high-quality input connection from a home theater receiver or preamp with a balanced LFE output. Available in High-gloss Piano Black or Satin Black finishes.

Wish the Dynamo 1500X was a wireless sub? Check out the MartinLogan SW2-TRD wireless adapter kit.

Average Review:

This was my first sub upgrade in quite some time and this bad boy delivers. Loud in all the right places and very tight when it needs to be. Fills the whole house without shaking it unnecessarily. The upgrade to the gloss black is a must. If you have the means, I highly recommend picking one up.

MartinLogan Dynamo™ 1500X Reviews

Bass for Days...

I was looking for a powerful sub that had a balanced XLR input to take advantage of the XLR pre-outputs on my McIntosh MX122 Processor. The Martin Logan Dynamo 1500X met all my criteria. This sub really cranks out the bass, however, when my room is properly calibrated for audio levels the gain is only set to about 20% so much of the 1500X's full potential will not be utilized. I love that it is easily converted between front firing and down firing. It arrives set up for down firing, I needed to convert it to front for my particular room setup. When you do convert it, the controls will be on the bottom instead of the back, in order to accommodate hands and cables the feet are pretty tall. Setup was easily and the unit not too heavy. If I have any knock its simply the cabinet finish and grill are fairly basic. At $1600 I expected a little better finish.

Great product as expected from MartinLogan

This was my first sub upgrade in quite some time and this bad boy delivers. Loud in all the right places and very tight when it needs to be. Fills the whole house without shaking it unnecessarily. The upgrade to the gloss black is a must. If you have the means, I highly recommend picking one up.

Pros:Superb sound. Great looks.

Cons:The only downside is that it doesn't come with the wireless option. Sure I'll buy the kit -but for the price this should be standard.

4 of 4 found this helpful

Martin Logan 1500X

This sub is worth the money. It kicks hard and has a ton of power. I would not mess with anything smaller. I had a Polk 600 prior and it blew out and I was upset with Polk quality so I wanted to go to the next level. This sub is many steps above. Well worth the price.

Inverse Mathematical Equalization (IME) Filtering: An IME
filter is derived from the inverse of the unfiltered driver response. Precision
IME filtering yields extremely accurate low-frequency response; far superior to
that provided by the simple second-order high-Q filters typically found in
subwoofers in this price range.

Sealed Cabinet w/ Internal Bracing: On the outside, the
Dynamo 1500X's cabinet is constructed from the finest composite material for
acoustic integrity. Inside, critically placed structural cross-bracing acts an
excellent baffle for the woofer while the added rigidity keeps cabinet-induced
resonances and non-linearities to inaudible levels. As a result the MartinLogan
Dynamo 1500X maintains a smooth, consistent response regardless of music or
movie source material.

Perfect Bass Kit (PBK) Ready: Although correct placement
plays a key role in optimizing subwoofer performance, positioning a subwoofer
often requires compromises. Not anymore, thanks to MartinLogan's Perfect Bass
Kit (839PBK,
sold separately). The Dynamo 1500X is MartinLogan's first powered sub to feature
PBK room correction. PBK uses a computer and microphone to listen throughout the
listening environment and tailor the sub's performance to the unique acoustic
properties of a room; resulting in clean, powerful bass down to 20Hz.

Front-Firing or Down-Firing Configuration: To maximize
performance when installed inside of a cabinet or other discrete installation,
the Dynamo 1500X's standard down-firing configuration easily converts into a
front-firing orientation; no tools required. A grille cover and 90-degree RCA
adaptors are provided for use in front-firing applications. Dimensions:

Note: If placing the powered subwoofer inside of a cabinet,
it is recommended that there be a minimum of 3" of open space between the
cabinet and the front and back sides of the powered sub.

Seamless System Integration: Comprehensive connection
options, low-pass filtering, and phase control make integrating the Dynamo 1500X
subwoofer into a multichannel home theater or stereo music setup simple and
seamless. The main left/right line-level inputs feed into a precision low-pass
filter with a cut-off frequency variable from 40 to 150 Hz. For systems in which
the AV receiver supplies the low-pass crossover, the Dynamo 1500X offers an LFE
input (via either XLR or RCA) that bypasses its internal filters. The phase
control can be set to 0, 90, or 180-degrees. Additionally, a 3.5mm trigger input
allows your AV receiver to turn the Dynamo 1500X on/off via a 12V trigger
connection.

Energy Transfer Coupler (ETC) Spikes: The Dynamo 1500X comes
with custom ETC spikes which can be used along with the pre-installed rubber
feet to enhance stability on thick carpets, or create tighter coupling between
subwoofer and floor to enhance overall sound quality. The spiked feet add 0.625"
of height to the powered sub.

Auto Power On/Off: The powered subwoofer will automatically
enter a power saving mode when no audio signal is detected. The subwoofer will
automatically come out of power saving mode when an audio signal is detected.

Break-In Period: The Dynamo 1500X subwoofer requires
approximately 50 hours of break-in at moderate listening levels before its
optimal performance occurs. This will factor in on any critical listening and
judgment.

Our Product Research Team

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Q & A

Customer Q&A

Crutchfield askedWhy did you buy this?

I was looking to add some serious punch to my gear and also wanted a balanced (XLR) input
[ Adam May 03, 2017 ]